混合信号集成电路中使用有源保护带滤波器的基板降噪

Digest of Technical Papers., Symposium on VLSI Circuits. Pub Date : 1995-06-08 DOI:10.1109/VLSIC.1995.520675

Keiko Makie Fukuda, Satoshi Maeda, Toshiro Tsukada, Tatsuji Matsuura

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引用次数: 37

摘要

针对模拟和数字混合信号集成电路，提出了一种采用“有源保护带滤波器”的基板降噪技术。由运算放大器产生的噪声消除信号被主动地输入到保护带中以消除衬底噪声。在0.8 /spl mu/m的CMOS测试芯片上，实验结果表明，在频率低于1mhz的情况下，衬底噪声被抑制到小于原始非抵消噪声的1%。

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Substrate noise reduction using active guard band filters in mixed-signal integrated circuits

A substrate noise reduction technique using an "active guard band filter", is developed for analog and digital mixed-signal integrated circuits. A noise cancellation signal generated by operational amplifiers is actively input into a guard band to cancel substrate noise. In a 0.8 /spl mu/m CMOS test chip, substrate noise was experimentally suppressed to less than 1% of the original non-canceled noise for frequencies below 1 MHz by using this technique.

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Digest of Technical Papers., Symposium on VLSI Circuits.

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